66339157194 has 32 divisors (see below), whose sum is σ = 149439815040. Its totient is φ = 21810132576.

The previous prime is 66339157177. The next prime is 66339157219. The reversal of 66339157194 is 49175193366.

66339157194 is a `hidden beast` number, since 6 + 63 + 3 + 9 + 1 + 571 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 66339157194.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8410462 + ... + 8418345.

It is an arithmetic number, because the mean of its divisors is an integer number (4669994220).

Almost surely, 2^66339157194 is an apocalyptic number.

66339157194 is an abundant number, since it is smaller than the sum of its proper divisors (83100657846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66339157194 is a wasteful number, since it uses less digits than its factorization.

66339157194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16828891 (or 16828885 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 66339157194 in words is "sixty-six billion, three hundred thirty-nine million, one hundred fifty-seven thousand, one hundred ninety-four".